Does the game support Virtual Reality?
Yes. Just Death was actually designed over the last few years from the ground up with virtual reality in mind. I've found some elements to be extremely immersive, for instance if you switch to first-person mode, and use the positional-head-tracking of a VR headset to put your eyes behind the weapon sights, you actually have to close one eye to aim. Obviously the interiors of the vehicles are also very nice with a VR headset. Based on feedback from early adopters, and players I will decide how much further to pursue integration of virtual reality.
What VR Headsets have you tried it with?
I've only had a chance to integrate the Oculus DK1 and Oculus DK2 into my game engine. I will try as many HMDs as practical.
Is the VR mode in the game hard to setup?
You'll need to edit some configuration files, and run a specific version of the firmware on an Oculus DK1 or DK2. I am not officially claiming full VR support because at this time ( January 2016 ), there are only developer versions of VR Headsets on the market. These Dev Kits inherently come with a slew of issues and hurdles to get things working on each user's unique computer configuration.